For now the DiggBar also includes a feedback button so you can tell them how it is and they’ve also hinted at some big changes to Digg search and the inclusion of using Digg urls automatically in Twhirl.

At first glance the DiggBar certainly looks similar to StumbleUpon’s new download-less toolbar and might mean certain death for StumbleUpon’s rumored short-url service su.pr, Digg might have once again one-uped the competition.